Puras®

The first fully-automatic gold refining system with integrated nitric and hydrochloric acid recovery

The new Puras® gold refining system from Koras® is able to refine all types of precious metal alloys in a fully automatic process without the release of acidic gases and with the recovery of nitric and hydrochloric acid.

The system consists of glass reactors with a heating mantle with stirrer, gold precipitation container, and special fume scrubbers for NOx and Cl2 gases. These special fume scrubbers can be used to recover nitric acid (up to 50%) from NOx gases and hydrochloric acids (up to 30%) from HCl /Cl2 to enable reuse for the dissolving process. The complete fully automatic process guiding and monitoring is made using a touch display.

Advantages:

Reduction of the volumes of chemicals used
Higher refining efficiency, up to 20% silver content is possible
Reduction of required personnel through fully automatic program control
No emissions of gases; a standard fume scrubber is not necessary
100% recovery of nitric acid (up to 50%) and hydrochloric acid (up to 30%) from the acidic exhaust fumes
Exhaust emission values of NOx; HCL and CL2 are below the allowed limit values for Europe, China, etc.
100% fully automatic program control
Process guiding and monitoring can be made using a notebook or mobile phone app

	Puras® 6	Puras® 15	Puras® 30	Puras® 60	Puras® 120
Power supply	400 V	400 V	400 V	400 V	400 V
Power	4 kW	6 kW	12kW	18 kW	36 kW
Quantity alloy (6-8 h)	6 kg	15 kg	30 kg	60 kg	120 kg
Dimensions in mm (WxDxH)	3200 x 880 x 2500	5070 x 1010 x 3015	5400 x 1210 x 3015	5850 x 1380 x 3450	6820 x 1380 x 3450

Koras GmbH | Hauptstraße 66 | D-75331 Engelsbrand
Telefon 07082 - 792 83-00 | Fax 07082 - 792 83-28 | Email info@koras-group.de